Dual-Purpose Mounting Plates: Includes two mounting plates, one rectangular and one round, with TPU balls. Pre-drilled holes ensure compatibility with a variety of marine electronics, including fish finders, chartplotters, and depth gauges. Durable: Constructed of durable aluminum alloy, this fish finder mount is corrosion-resistant, ensuring long life and durability even under the pounding of ocean waves. 360° Rotation: The dual 360° rotating ball mounts allow the holder and bracket to rotate 360°. The sturdy bracket with base stands 5.4 inches tall, providing an optimal field of view for your fish finding needs. Easy Installation: The base and bracket are removable, allowing you to mount the base on your boat first and then attach the bracket to the base. Secure your fish finder to the flat bracket. This is an ideal marine electronics mount for mounting fish finders, chartplotters, depth finders, navigation systems, radios, and more. Compatible with for Garmin, for Lowrance, for Humminbird, and for Raymarine fish finders and chartplotters. !!! Please note: Not compatible with for Humminbird Helix 5, Helix 7, Helix 8, Helix 9, Helix 10, Helix 12, Helix 15, Solix 10, and for Lowrance Hook Reveal 5. Color: Black Material: Aluminum Alloy Package Contents: 1 x Fish Finder Mount Base 1Set x Screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.